PD172 / PD174 Single Channel Hybrid Vehicle Detector

This hybrid model provides the standard features found on the existing PD130 range as well as A.F.S. (Automatic Frequency Selection) found on the PD160 range. This feature ensures less set up time, thus simplifying the installation of complex multi-lane access control sites. Furthermore this ensures a low cost of ownership, complimented by a full 5-year manufactures warranty.


Specific Features:

AFS: The Automatic Frequency Selection allows the ability to automatically select the best frequency setting by minimizing the noise and maximize the signal strength.

Diagnostics: Comprehensive diagnostics capabilities allow for accurate diagnosis of loop and installation problems via Nortech’s DU100 or DU700.

Selectable Pulse Width: The option to select either a 150ms or 250ms response time is now switch selectable.

Selectable Permanent Presence: The output of the presence relay can be selected to maintain an output for an indefinite period, eliminating premature barrier, gate or door closure.

Pulse Relay: The relay can be selected to provide a pulse output either on detect or on undetect.

Automatic Sensitivity Boost (ASB): Facilitates the reliable detection of all vehicle combinations and high-bed vehicles by boosting the sensitivity to maximum after detection of a vehicle.

Fail Safe or Fail Secure: The option to select the relay output polarity is now configurable from a switch on the front panel.

Product codes

307FT0101 - PD172 Nortech 240 VAC

307FT0102 - PD174 Nortech 12-24v AC/DC

Self tuning range:  20-1000μH

Sensitivity: Four step adjustable on face-plate, Ranging from 0.01% ΔL/L to 1% ΔL/L with ASB override option
Frequency: Automatic with AFS or manual with four steps adjustable on face plate, 12- 80kHz (frequency determined by switch setting and loop geometry)
Output Configuration:  2 output relays
Relay 1 = Presence output
Relay 2 = Pulse output

Pulse output duration: 150ms or 250ms (switch selectable)
Presence time: 1 hour for 3% ΔL/L and permanent presence option

Operating modes:
1. Limited presence/ permanent
2. Pulse on detect/ undetect
3. Auto Sensitivity Boost off/on
4. Fail safe / Fail secure output selection

Indications: The following face-plate indications are provided:
Red LED – power;
Green LED – channel indicator
1. Tuning – on steady followed by flashing frequency count (x 10 kHz)
2. Undetect – off
3. Detect – on steady
4. Fault – on with short off

Protection: Loop isolation transformer, zener diode clamping on loop inputs and gas discharge tube protection
Power requirements: 240V AC ± 15% 48-60Hz (PD172) / 12-24V AC/DC ± 15% (PD174)  – 1.5VA max @ 230V
Presence Output Relay: 1A @ 230V AC Change-over contacts (fail-safe)
Pulse relay: 1A @ 230V AC Change-over contacts (non-failsafe)

Operating temperature range: -40ºC to +70ºC

Material: High heat ABS blend
Dimensions: 78(H) x 41(W) x 80(L)mm
Mounting: Shelf or DIN-rail socket
Connector: Single rear mount 11-pin submagnal (JEDEC No. B11-88)
Options: 1 metre flying lead  or 11-pin screw terminal base